<template>
  <div class="app-container">
    讲师表单

     <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      

        <!-- 讲师头像：TODO -->
          <!-- 讲师头像 -->
          <el-form-item label="讲师头像">

    <!-- 头衔缩略图 -->
    <pan-thumb :image="String(teacher.avatar)"/>
    <!-- 文件上传按钮 -->
    <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
    </el-button>

  <!--
  v-show：是否显示上传组件
  :key：类似于id，如果一个页面多个图片上传控件，可以做区分
  :url：后台上传的url地址
  @close：关闭上传组件
  @crop-upload-success：上传成功后的回调 
  <input type="file" name="file"/>
  -->
  <image-cropper
                v-show="imagecropperShow"
                :width="300"
                :height="300"
                :key="imagecropperKey"
                :url="BASE_API+'/eduoss/fileoss'"
                field="file"
                @close="close"
                @crop-upload-success="cropSuccess"/>
  </el-form-item>


      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>

  </div>
</template>

<script>

  import teacherApi from '@/api/edu/teacher'
  //头像
  import ImageCropper from '@/components/ImageCropper'
  import PanThumb from '@/components/PanThumb'
   export default
   {
    components:{
      ImageCropper,PanThumb
    },
       data()
      {
          return {
            teacher:{
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: " "
       },

      //上传弹框组件是否显示
      imagecropperShow:false,
      imagecropperKey:0,//上传组件key值
      BASE_API:process.env.BASE_API, //获取dev.env.js里面地址
      saveBtnDisabled:false  // 保存按钮是否禁用,
        }
      },
       created(){
           this.init()
       },
       //使用监听
       watch:{ 
         $route(to,from){//路由变化方式
              this.init()
         }
       },
       methods:{
        close() { //关闭上传弹框的方法
        this.imagecropperShow=false
        //上传组件初始化
        this.imagecropperKey = this.imagecropperKey+1
    },
      //上传成功方法
      cropSuccess(data) {
        this.imagecropperShow=false
        //上传之后接口返回图片地址
        this.teacher.avatar = data.url
        this.imagecropperKey = this.imagecropperKey+1
      },
        init(){
            //修改时回显信息  判断路径 !route参数params有没有id  路径参数
        // console.log(this.$route)
        if(this.$route.params&&this.$route.params.id)
        {
          //获取id值
          const id=this.$route.params.id
          this.getInfo(id)
        }
        //bug修改，清空表单,不可以,因为created只加载一次,所以使用监听
        else{
            this.teacher={}
        }
        },
        //得到讲师信息
        getInfo(id){
            teacherApi. getTeacherInfo(id).then((response)=>{
              //后端返回数据  return R.ok().data("teacher",teacher);
              // console.log(response)
              this.teacher=response.data.teacher

            })
        },
        saveOrUpdate(){

          //判单teacher身上有没有id属性
          if(!this.teacher.id)
          {
            //添加
            this.saveTeacherInfo()
          }
          else{
            this.updateTeacher()
          }   
        },
        //保存讲师信息
        saveTeacherInfo()
        {
          //返回promise对象
            teacherApi.addTeacher(this.teacher).then(()=>{
              console.log("添加讲师成功")
              this.$message({
              type: 'success',
              message: '添加成功!'
          })
              //跳转到讲师页面
              this.$router.push({path:'/teacher/table'})

            })
        },
        //更新讲师信息
        updateTeacher(){
           teacherApi.updateTeacherInfo(this.teacher).then(
            ()=>{
              this.$message({
              type: 'success',
              message: '更新成功!'
            })
            //回到列表页面
            this.$router.push({path:'/teacher/table'})
        }).catch(()=>{
            
                console.log("修改信息失败")
            })
        }
        //up结束
      }
      //methods结束
    }
      

   

</script>


<style>
</style>